use sea_orm::DatabaseConnection;
use tracing::info;
use utils::{response::AppResult, sea_orm_service::SeaOrmService};

use crate::rpc::pb::permission::*;

/// 权限服务
#[derive(Clone)]
pub struct PermissionService {
    orm_service: SeaOrmService,
}

impl PermissionService {
    /// 创建新的权限服务实例
    pub fn new(db: DatabaseConnection) -> Self {
        Self {
            orm_service: SeaOrmService::new(db),
        }
    }

    /// 检查权限
    pub async fn check_permission(&self, request: tonic::Request<CheckPermissionReq>) -> Result<tonic::Response<CheckPermissionRes>, tonic::Status> {
        let req = request.into_inner();
        info!("检查权限 - user_id: {}, resource: {}", req.user_id, req.resource);
        
        let response = CheckPermissionRes {
            allowed: true,
            reason: "有权限".to_string(),
            message: "成功".to_string(),
            code: 200,
        };
        
        Ok(tonic::Response::new(response))
    }

    /// 添加策略
    pub async fn add_policy(&self, request: tonic::Request<AddPolicyReq>) -> Result<tonic::Response<AddPolicyRes>, tonic::Status> {
        let req = request.into_inner();
        info!("添加策略 - {:?}", req);
        
        let response = AddPolicyRes {
            success: true,
            message: "策略添加成功".to_string(),
            code: 200,
        };
        
        Ok(tonic::Response::new(response))
    }

    /// 获取用户权限
    pub async fn get_user_permissions(&self, request: tonic::Request<GetUserPermissionsReq>) -> Result<tonic::Response<GetUserPermissionsRes>, tonic::Status> {
        let req = request.into_inner();
        info!("RPC: 获取用户权限请求 - user_id: {}", req.user_id);
        
        let response = GetUserPermissionsRes {
            permissions: vec![],
            message: "成功".to_string(),
            code: 200,
        };
        
        Ok(tonic::Response::new(response))
    }

    /// 获取角色权限
    pub async fn get_role_permissions(&self, request: tonic::Request<GetRolePermissionsReq>) -> Result<tonic::Response<GetRolePermissionsRes>, tonic::Status> {
        let req = request.into_inner();
        info!("RPC: 获取角色权限请求 - role_id: {}", req.role_id);
        
        let response = GetRolePermissionsRes {
            permissions: vec![],
            message: "成功".to_string(),
            code: 200,
        };
        
        Ok(tonic::Response::new(response))
    }

    /// 删除策略
    pub async fn remove_policy(&self, request: tonic::Request<RemovePolicyReq>) -> Result<tonic::Response<RemovePolicyRes>, tonic::Status> {
        let _req = request.into_inner();
        info!("RPC: 删除策略请求");
        
        let response = RemovePolicyRes {
            success: true,
            message: "策略删除成功".to_string(),
            code: 200,
        };
        
        Ok(tonic::Response::new(response))
    }

    /// 获取策略列表
    pub async fn get_policy_list(&self, request: tonic::Request<GetPolicyListReq>) -> Result<tonic::Response<GetPolicyListRes>, tonic::Status> {
        let _req = request.into_inner();
        info!("RPC: 获取策略列表请求");
        
        let response = GetPolicyListRes {
            policies: vec![],
            total: 0,
            message: "成功".to_string(),
            code: 200,
        };
        
        Ok(tonic::Response::new(response))
    }

    /// 验证用户权限的通用方法
    pub async fn verify_user_permission(&self, user_id: i32, resource: &str) -> Result<bool, tonic::Status> {
        info!("验证用户权限: user_id={}, resource={}", user_id, resource);
        
        Ok(true)
    }
}